Pneumatic tire.



Patented July l0, I900.

J. BAKER. PNEUMATIC TIRE.

ation filed Apr. .9,

(App

(No Model.)

' UNITED STATES PATENT OFFICE.

JOl-IN BAKER, or MEACHAM, ILLINOIS;

PNEUMATIC TIRE;

SPECIFICATION formin part of Letters Patent No. 653,497, dated July 10,1906.

Application filed April 9, 1900.

To all whom it may cancer-n:

Be it known that I, JOHN BAKER, a citizen of the United States, residingat Meacham, in the county of Du Page and State of Illinois, haveinvented certain new and useful Improvements in Pneumatic Tires; and Ido: hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same."

My invention relates to a novel construction in a pneumatic tire, theobject being to provide a tire which can be easily removed and replacedfor purposes of repair and which is simple and efiicient; and itconsists in the features of construction and combinations of partshereinafter-fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure l is atransverse section of a tire and rim constructed in accordance with myinvention, showing the tire inflated. Fig. 2 is a similar sectionshowing the tire removed, but ready to be replaced on the rim.

In pneumatic tires the greatest difficulty is experienced in providingsuitable means for readily removing the tire for purposes of repairingpunctures and again replacing it. Many complicated devices for thispurpose have been invented, but none has proved quite satisfactory, asall such tires required an inner inflating-tube, which is difflcult torepair properly.

The ideal pneumatic tire is a single tube, which gives least trouble inrepairing; but such tires have been difficult to seal air-tight whereany means for detaching and opening same are provided. To overcome thesedifficulties and provide a simple detachable single-tube tire, I havedesigned the following:

My tire consists of an annular band A, the edge portions B and O ofwhich form flaps which overlap each other to form an annular tube whichis adapted to be inflated. Said edge B has an annular band of heavy wireD vulcanized therein, while said flap 0 is provided on its outer facewith an annular shoulder E, the latter being adapted to fit within anannular groove vIi in the rim G, The latter is double convex incross-section, its outer convex face being provided with said annulargroove F at its middle portion and with grooves H and I on its sides,into II and I and are in proper position.

Sei'ial No. 12,127. (Nomodeh) 11 and I as to permit the insertion ofpart of the flap 0 between it and said groove, said portion beingcompressed into said groove by saidv band when the latter is in theposition shownin Fig. 1. Said tube is adapted to containa free annularband J, the latter being inserted in same when the tube is open byturning the edge 0 thereof back and over the Tim G and passing itthrough said band J. Said band J is adapted to compress part of the flapG into the groove I, its diameter being the same relatively to saidgroove I as the band D is to the groove H. A tube K, containing a valve,is secured to said flap B and is adapted to pass through an opening inthe flap O and its annular shoulder E and through an opening in the rim.The free end of said tube K is screw-threaded to receive a nut L, bymeans of which it is drawn down to hold the flaps B and O firmly uponthe rim at this point.

To mount my tire on the rim, the flap O is first drawn over said rimuntil said flap B is practically in place on same, said band Dpreventing said flap B from passing completely over said rim. Said flapCis then inserted through said band J and then turned back and insertedthrough said band D underneath the flap B until the shoulder E is inplace in saidg-roove F in the rim, the part of the flap B adjacent thevalve K being then moved outwardly to permit the end of said valve to beinserted through the opening in flap O. The tread portion M of the bandA is then drawn outwardly, thereby moving the bands D and J sidewiseuntil they press upon the flaps O and B, respectively. They may then befurther pressed by the fingers until they compress the rubber into thegrooves manner the tube formed is rendered airftight, and by theninflating it the tire is complete. After inflation it will be obviousthat the tendency of the tread portion to move outwardly will exert aside pressure upon the bands D and J, thus forcing same more firmly intothe grooves H and I and securely holding them against displacement.

In this While I do not desire to use an inner tube and do not believethat it will be required, it may obviously be used, and I have thereforeindicated same in dotted lines in Fig. 1.

If said tire should be punctured, I can obviously easily get at thepunctured portion by withdrawing the portions of the flap 0 adjacent thepunctured portion to provide an opening large enough to insert the hand,this being generally all that is required. Thus complete removal of thetire is unnecessary, except in case a large tear is to be repaired.

My tire and rim are easily made, the latter, owing to its form, beingparticularly strong, durable, and simple, so that it is not very liableto break in case the tire should be punctured.

I claim as my invention- 1. In a tire, the combination with a rimprovided with an outer convex face having a central annular and annularside grooves, of an open tube adapted to be mounted thereon, said tubecomprising a tread portion and two annular flaps adapted to overlap eachother on the rim, one of said flaps being provided with an annularshoulder adapted to fit within said central annular groove in said rim,and the other of said annular flaps being provided in its edge with anannular metal band adapted to compress a portion of said firstnamed flapinto one of said side grooves in said rim, and a free annular bandcontained within said tire and adapted to engage and compress a portionof said last-named flap into said other side groove of said rim.

2. In a tire, the combination with a rim provided with an outerlaterally-convex face having an annular middle groove, of a tirecomprising a band the edge portions of which form overlapping flaps, oneof said flaps being provided with an annular shoulder adapted to entersaid groove in said rim, an annular metallic band mounted in the edge ofsaid other flap and being of less diameter than the greatest diameter ofsaid rim and adapted to engage and compress said first-named flapagainst said rim, and a free annular band of less diameter than thegreatest diameter of said rim within said tire adapted to engage andcompress said last-named flap against said rim.

3. In a tire, the combination witha rim provided with anouterlaterally-convex face havin g a central annular groove and annularside grooves, of a tire comprising an open tube the edge portions ofwhich form overlapping flaps, one of said flaps being adapted to restupon said rim and being provided with an annular shoulder adapted to fitsaid annular groove, devices carried by said other flap and adapted toengage and compress part of said firstnamed flap into one of said sidegrooves, and devices freely movable within said tire and adapted to beengaged thereby to compress a portion of said last-named flap into saidother side groove when said tire is inflated.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN BAKER.

Witnesses:

RUDOLPH WM. LoTz, WM. 13. SNQWHOOK.

